Overview:

This is where we store all the terraform scripts for the resouces we need for Dell Powerscale.

What we want to acheive:

We are showcasing Infrastructure As Code.

Typically, Terraform and git is used to make sure that infrastructure is properly managed and thouroughly documented.

It's a good practice to make sure that:

• The resources can be created with terraform scripts whenever possible.
• Typically, a role like terrafomer.role is created.

We are showcasing how modules can be used to create resources for Dell Powerscale.

We want to create a NFS export. This can be later used on a Linux machine to mount the NFS export.

Terraform best practices:

Terraform modules are a game-changer in the world of Infrastructure as Code (IaC). They offer a structured and efficient way to organize and reuse your Terraform configurations, making your infrastructure deployments more reliable, scalable, and maintainable.

Key Benefits of Using Terraform Modules:

#### Reusability:

Consistent Patterns: Encapsulate common infrastructure patterns (e.g., filesystem, users, groups) into reusable modules.

Faster Development: Avoid repetitive coding by leveraging pre-built modules.

Reduced Errors: Minimize human error by using well-tested and standardized modules.

#### Modularity:

Clear Structure: Break down complex infrastructure into smaller, manageable modules.

Improved Readability: Enhance code readability and understanding.

Easier Maintenance: Isolate changes and updates to specific modules.

#### Scalability:

Rapid Deployment: Deploy multiple instances of the same module with different configurations.

Flexible Customization: Customize modules to fit various use cases.

Efficient Scaling: Easily scale your infrastructure up or down.

#### Collaboration:

Shared Components: Share modules across teams and projects.

Standardized Practices: Promote consistent coding standards and best practices.

Faster Onboarding: New team members can quickly learn and contribute.

#### Testing and Validation:

Isolated Testing: Test modules independently to ensure correctness.

Accelerated Development: Identify and fix issues early in the development process.

Enhanced Reliability: Deploy with confidence, knowing your infrastructure is well-tested.

Pre-requisite:

On your development machine:

Your development machine is the computer that you will use to create and/or run the terraform scripts.

• git has been installed on the machine.
• Terraform has been installed on the machine.

Accesses and permissions:

You need to have credentials for:

• Powerscale

##Step by Step Instructions:

• Define the infrastructure you need.
• Create the infrastructure with Terraform.
• Test that the service is working as expected in the TEST environment.

The terraform state for the resources associated to these terraform scripts will be stored in the file tfstate.

Resources that we need

Resources that we create

• Powerscale Filesystem - powerscale_filesystem
• Powerscale Access Zone - powerscale_accesszone
• Powerscale Network Pool - powerscale_networkpool
• Powerscale NFS Export - powerscale_nfs_export
• Powerscale User - powerscale_user
• Powerscale user group - powerscale_user_group

How to create resources

Run terraform scripts.

• At the terminal,
  • Run the foll. in order
    • "terraform init" to load all the modules
    • "terraform validate" to validate the configuration
    • "terraform plan" to create a tfstate plan
    • "terraform apply" to create resources as per the plan

How to destroy resources

• To destroy a target resource, run
  • terraform destroy -target powerscale_user_group.user_group

Future developments and To-Dos

• Use provider "remote-exec" to mount the NFS export.
• Also, explore other resources that can be created for Dell Powerscale.